Have you tried to use DNV 2017 with CAESAR II?
We are stressing a line betweeen the top anchor flange of a riser and the trap on the topside of a platform.
Company asked us to use CAESAR II and DNV 2017, ma we get no stress at all if the vertical coordinates are > 0.
According to DN 2017: "a submarine pipeline system extends to the first weld beyond the first valve, flange or connection above water on platform"
When using DNV 1996 we get some stress for above sea level lines.

What's the situation:
1)DNV 2017 is not applicable above sea level lines
2)there is a bug in CAESAR II
3) we are making some mistakes
Best regards